Desiccating apparatus.



No. 654,877. Patented July 31,, who. a DEVAUX & u DIEDRICH. DESICCATING APPARATUS.

(Appl t fildD 6 1899) 3 sheets sheet I,

WITNESSES:

m: uonms PETERS 00.. Pnoroumou WASHI No. 654,877. Patented July 3|, I900.

G. DEVAUX & H. DIEDRICH DES ICGATING'APPABATUS.

(Application filed Dec. 6, 15399.

(No Model.) 3 SheetsSheB 2.

1n: 'Nonms PEER: 00.. PNOYO'UTHOY. war-Imam D. c.

Patented July 3|, I900. G. DEVAUX &. H. DIEDRICH.

- DESICCATING'APPABATUS.

(Application filed Dec. 6,-'1899.)

3 Sheets-Sheet 3,

(No Model.)

ll lllllllllllllllll ll:

///IIF| WITNESSES:

GASTON DEVAUX; or BRETEUIL, 'AND HENRY nnrnnron, or PARIS, FRANCE.

Nmmn STATES" PATENT 01mm.

DESICCATING APPARAl'U.

srnoIrIcArIoN forming art of Letters Patent No. 654,877, dated July 31, 1900.

Application filed December 6,1899. Serial No. 739,403. (No model.)

To aZZ whom it may concern:

Be it known that we, GASTON DEVATiX, residing at Breteuil, (Oise,) and HENRY DIED- RICH, residing in Paris, Republic of France, citizens of France, have invented certain new and useful Improvements in Desicoating Apparatus; and we do hereby declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the same, reference being made to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to an apparatus for desiccating granularand slimy or pasty ma terials reduced tosmall fragments, and is especially applicable for desiccating phos-j phates, superphosphates, ore, dregs, grains, marl, and the like. 5

The object of the invention is to provide such an apparatus of simple, strong, and durable construction, efficient and reliable in operation.

The invention consists in the improved des iccating apparatus and in the combination and arrangement of the various parts thereof,

substantially as will be hereinafter more f ully described and finally embodied in the clauses of the claim.

Referring to the accompanying drawings,

in which like letters of reference indicatecorresponding parts in each of the severalfigures, Figure l is a longitudinal sectional view through our improved desicoating apparatus,

certain parts being brokenaway and. others removed to better illustrate the nature of our invention. V Fig. 2 is a horizontal sectional view through the apparatus and more clearly illustrating the construction of the furnace. forming a part of the same, andFig. 3 a crosssectional view through thefurnace.

In said drawings, f representsa furnace having its central-portion surrounded by a cold-air chamber a, into which air is admitted through the regulating port or inlet a, which latter is provided with a door or cover of any gases coming from the furnace are intermingled or mixed. At the rear of the furnace is arranged the column or desiccating chamber g, which will be hereinafter more fully described and which is surrounded by a circular channel or chamber 9', into which latter withan outlet 6, adapted to be connected with any suitable exhaust. In other words, said outlet 6 forms the exhaust for the chamber 0. The desiccating column or chamber g' is penetrated by a' shaft m, having suitable bea'r ings in the apparatus and carrying securely mounted thereon a series of radially-arranged arms 70, provided with downwardly-extending plows or pedals Z. It must be remarked that the pedals on one series of arms are arranged in opposite direction to the pedals on the adjacent series of arms, and, further, that each series of arms and pedals is separated from its adjoining series by plates 07 3, provided, respectively, in its central portion with a circular opening a and near its outer periphery withjelongated openings o, fora purpose hereinafter described. In the top portion of the chamber 0 is arranged a funnel or hopper is", communicating through a pipe q with the dome or cap 9 In said pipeq is'arranged a spiralscrew q, (shown in front elevation in i Fig. 1,) by means of which latter the material to be'de'siccated is-forced fromthe hopper into the dome and desiccating-chamber. In the bottom of the. desiccating -chainber g is likewise arranged a hopper t, communieating with the exterior of the apparatus through a tube or pipe t in which is also arranged a spiral screw 25 for the purpose of discharging the desiccated material from the column g. l In operation the material to be desiccated is inserted into the hopper 70 and is forced,

from the latter by means of the spiral screw into the desiccating-chambe'r g and will drop on the top plate r in said chamber. By the rotation of the shaft said material is agitated through the respective pedals Z, and on ac.- count of their peculiar position on the arms 10 is forced gradually toward the center of saiding in opposite direction to the pedals on the arms above) gradually moved towardthe outer edge of said plate 8 and is afterward discharged through the elongated openings/v into contact with hot gases.

of the latter onto the plate r below. This.

operation is continued until the material reaches the bottom of the desiccating-chamber, when it enters the hopper t and is forced The material is now again agitated.

provided with anexhaust-outlet, said second mentioned chamber or channel being separated from the first-mentioned chamber or channel but communicates with the dome, and a furnace communicating with the firstmentioned chamber or channel, substantially as described.

2. A desiccating apparatus consisting of a column or chamber provided at or near its lower portion with inlet-openings, a dome or ..cap on the top of said column and communicating therewith and provided with outletopenings, a series of parallel plates in the column-one above the other and each pro- 'vided with a central opening, a second series of parallel plates alternately arrangedwith the plates of'the'first-mentioned series and each provided near its outer periphery with holes oropenings, a revolving shaft penetrating'said plates and column, a series of arms mounted on said shaft and between'adjaoent plates and provided with downwardly-extendby means of the spiral screwt out of the ap-,

paratus, as will be manifest. While the material is being agitated and mixed the combined heated air andgases from the furnace f passes through the grid n into'the chamber 19, and from the latter through the inlets c 0 into the desiccating-column g, traverses the latter in an upward directiomand passes through the outlets d of the domegiinto. the chamber 0, and from the latter through the exhaust 6 into the atmosphere. It'm'ust be remarked that the temperature of the heated air and gases is kept comparatively low and uniform, and the object of said comparatively low temperature isto permit a thorough desiccation of such materials as are'injured by coming While the mixed air and gases are passing through the column g the moisture of the material to be desiccated is completely absorbed.

cap on the top of said column and communicating therewith and provided with outlet-i openings a series of parallel plates in the column-one above the other and each provided with a central opening, a second series of parallel plates alternately arranged with the plates of the first-mentioned series and each provided near its outer periphery with holes or openings, a revolving shaft penetrating saidplates and column, a series of arms mounted on said shaft and between adjacent plates and provided with downwardly-extending pedals, the pedals of one series being arranged in opposite direction to the pedals of the adjacent series, a chamber or channel surrounding the column, a second chamber rounding the dome or cap and or' channel sur ing pedals, the pedals of the one-series being arranged inopposite directionto the pedals ofv the adjacent series, a chamber or channel surrounding the column, a second chamber or channel surrounding the domeor cap and provided .with an exhaust-outlet, said-secondmentioned chamber or channel being separated from the first-mentioned chamber or channel but communicates with the dome, a

furnace communicating with the first-menl tioned. chamber or channel, a hopper in the second-mentioned chamber or channel communicating with the dome, and a second hopper'in' the bottom of the column and communicating with theexterior of-the apparatus, substantially asdescribed.v

I 3. A desiccating apparatus consisting of a column or chamber provided at' or near its lower portion with inlet-openings, a dome or cap onthe top of said column and communicating therewith and provided with outletopenings, a series of parallel plates-in the column -one above the other and eachprovided with'a central-opening, a second series of parallel plates alternately arranged with the 1 provided near its outer periphery with holes or openings, a revolving shaft penetrating said plates and column, a series of arms plates of the first-mentioned series and each mounted on said shaft and betweenadjacent i plates andprovided with downwardly-extending pedals, thepedals of one series being arranged in opposite direction tothe pedals of the adjacent series, a chamber or channel surrounding the column, a second chamber orachannel surrounding the dome or oapand provided with an exhaust-outlet, said secondmentioned chamber or channel being separated I from the first-mentioned chamberor channel but communicates with the dome, a

furnace communicating with the first-mentioned chamber or channel, a hopper comnunicating with thedome, an endless screw intermediate the hopper and dome, and coophave hereunto set our hands this 20th day of crating with said hopper, a second hopper in November, 1899.

the bottom of the column, a discharge-tube 1 GASTON DEVAUX.

communicating with said second hopper, and HENRY DIEDRICH. 5 an endless screw in said discharge-tube, sub- Witnesses:

stantially as and for the purposes described. EDWARD P. MAOLEAN,

In testimony that We claim the foregoingwe GEORGE E. LIGHT. 

